Reagent feeder



April 23, 1929. M KRAUT 1,709,987

REAGENT FEEDER Filed June 18, 1928 A TTORNE Y.

Patented Apr.` 23, 1929.

y iiiiiaasi MAX KRAUT, yoFjsAiv .rnaiCIsCdf'y CaLiFonNiA. l

REAGENT FEEDER,

if Application meal-.June is,

` This invention relates toy improvementsin reagent feeding devices for i'lotat-ion apparatus. L y ffllhe principalfobject is to provide a-.simple and ellicient lmeans for accurately feeding the f desired amount of oils or other reagentsjto the liquid `minfinalized;` pulp. Another obj ect is to provide an apparatus lhaving means for quickly and accurately.varying the ilfeed-fk ing ojl2 the reagent to. the pulp,fan`dalso to provide aieeding apparatus ywhich will coinbine liighesteliiciency at little cost, and which is simple `in construction and economical. inI operation,

With the above mentionedr and other ob.-

j'ects in view, the inventiony consists in the" novel construction andcombination oi' parts hereinat'ter described,,illustrated inthe raccompanyingdrawingsand pointed out in the claims hereto appended; it being understood. `that various changes in the form, proporf tion, size and ininorjdetails of construction within` the scope of' the rclaims `may vbe rey sorted to without departing from thespirit or sacrilicinganyoi the `yadvantages of the invention. L j

yTo morer fully comprehend the invention, reference is directed kto the accompanying drawings, wherein-r f l Fig. 1 is a. yview in sidefelevation, partly` in section, of the preferred embodiment of my invention. n I y, f Fig. 2 is a viewin top plan. rlll'rg. 13 a view in. Jfront .end elevation. Initlie drawings, wherein like characterslof reference Adesignate .corresponding parts, 1 indicates' a container for a body of oil oireagent to be fed or delivered to yinineralize'd pulp for treatment in a iiotation'or otherapfv paratus. f v f ln bearings 2 Carried bythe gripperedges of the sidewalls of the container 1, is at shaft 3 mounting a reagen'tpielifup wheel nivelevator et, having a'ielatively `broad face 5, the latter depending into the reagent body on the rotation oi `the wheel. The face of the wheel or elevator d is cii'cuinierentially grooved at 6, to afford a greater picleup.

area than ii the saine were smooth.` The shaft 8 has ygear connection at 7 with the power shai't 8 rotatable in bearings y9 and carrying a power wheel 1() driveny roinfany suitable power source.V

Supported above the container 1,`prefery ablyat the forward end oit' the container l, .is a reservoir 11 haviiigan inlet 12 and a suits'k 1927's. seriaiNoQ 286,472.

able reagent outlet 13, the latter being illustrat-ed ascontrollecl by a yneedlevalve 14. A suitable piek-up trough 15 is positioned with one end cooperating with the grooved faces of the elevator4 to remove the reagentadhering; thereto, and the other i end extending downwardly toward the reservoir inletl 12 into which it discharges. The trough ispro#` vided with a removable separating screen. 16, kthrough kwhich the reagent passes jprior to entering the reservoir 11. f The speed'of'the pick-up wheel orv elevator aand the area of its surface is ysuch that the'ii'iaterial elevated 'thereby and depositedin the reservoir 11 is c greater thanthe capacity of thereservoir outlet 13,1sogthat the duid level within the reservoir will,at all times, be maintained to drain through the overflow' pi pe 17 within ythe reservoir andy discharge into the ycontainer-1. n

`rbilouiited at the endiof the Container 1 is a transversely disposed oscillating shaft 1S carrying' a `mounting block 19in which is longitudinally adjustable `an open yended I tubular reagentconveyer 20, disposed atright angles to the shaft, as in Fig. 1. i y

Theconveyerf20 is normally disposed with ing end, andat a forward end wall oit the Container 1. k To theend `of shaft 18 is secured anfangie lever 22, weighted at 23, with its end resting on the end 24 of a relatively ,long lever 2t,

iuloruined` to fthe yside of container 1,' at 26.

Lever 25 carries pin 27 extending laterally therefrom inparallel spaced relation beneath` the extension 280i' shaft 3.

its discharge end in a plane below its receiv` pointpi'ojecting beyond 'the Mounted kkto ride' longitudinally pin 27 is ashoe 29 on the end of an operating lever 30 fulcruinedat B1 to block 32 and adapted for rlongitiidin'al movement on an adjusting screw disposed parallel with shaft entension 28, screw 33 carrying` an operating wheel an idler 35 which b-earsonthe periphery of affcylinder --SGcarried by and rotatable wi th the'` shaiftifeizteiision 28. Cylinder 36 has a y 'portion of its periphery cutaway ai-'recessed at" 37,r one edge of therecess or cut away pordisposed, as at 39.

In operation, the continuous rotation of thel elevatord maintains the fluid level in reservoir 11 at a point overiiowing pipe 17 The needlevalve is adjusted to permit the kdesired `quantity to flow :from the reservoir in 'B4- Above the shoe`29 the lever 30 carries ioov vrio

a given time.'Y The adjusting'wheel is rotated vto lmove block 32 longitudinally of screiv 33, and position idler 35 at the desired point longitudinally of cylinder 35. y

VItfivill be observed that When the recessed portion 37 of the cylinder is presented toidler 35, the receiving end of thetubular conveyer l 20 is-under the stream flow from the discharge 13 of reservoir 1l, directing the reagent from its path of normal gravity flow.

When the rotation of the cylinder tlremovesY the recessed portion from the idler, the conveyor 20 is moved from without the path Vof the streamflow from reservoir ll and the fluid discharging from the outletl returnsto the container l. Y

, 'By forming one edge of the cylinder yrecess spirallyfof the cylinder, and the other edge longitudinally disposed, the positiongofthe :idler 35 longitudinally of the. cylinder controls the timing'of pivot of conveyor 20.

' I claim n Y 1. In a reagent feeder, a reservoir provided with a continuous discharge and an overflow,

lmeans for delivering'to the reservoir a fluid reagent -in a greater quantity than Y the capacity ofthe discharge, conveying means movable at timed intervals to intersect the continuous kdischarge of reagent e from Vthe reservoir and tofdirectV VtheV same fromvr its usual pat-h, and means for varying the timing ofthe lconveying means into and from rythe flow of 'discharge ofthe reagent. Y

k2. In a reagent feeder,a reservoir provided Yvith continuous gravity discharge for theV fluid contentv therein and an overflow, means for Vdelivering to the reservoir a fluid re-. Vagent in a greater quantity than the (':apacityl of the discharge, a tiltablyjmountedconveying means positionedvwith one 'end movable to intersect,thevcontinuousdischarge of re-V agent from the vreservoirfto direct the same from its path of'gravity flow, means for piv- Y oting said conveying `meansand means for f V'varying v4theftiming of lthe'pivot of said con- Vveying means. j

3. In a reagentv feeder, a reservoir provided Y :with a lcontinuous gravity dischargefonthe fluid content therein and an overfloW,`means for delivering to the reservoir a' fluid reagent in a greater quantity than the capacity of the discharge, a "tiltably mounted f conveying means positionedwvithone end movable to.

intersect the continuous'discharge of reagent l from the reservoir to direct'the same from its path of gravity flow, a lever associated With the'conveying means, and means for pivotingr the Vlever including a rotatable cylinder Vformed on its surface with a. londitudinaldef pressiomon'e edge of which is disposed spirally of the cylinder surface, andan idler associated with the lever and adjustable longitudinally of the cylinder. f

il. In a reagent feeder, a main body of fluid reagent, an endless elevator dipping thereinto for continuously removing reagent therefrom, a reservoir elevated from the main body of reagent provided Withv an inlet, v'a va ve controlled continuous.discharge of a lesser ycapacity than the elevating capacity of the elevator, and an overflou7 discharging into the Vvmain fluid body; means for'iemovingA the fluid reagent from' the elevator (and for delivering it into the reservoir, conveying means movable for intersect-ing the continuous reagent discharge from the reservoir at pre-` determined intervals, and means for varying the timing ofk operation of the conveyingV means. Y 5. In a reagent feeder, a container for-a main body of fluid reagent, a pick-up Wheel rotatably mounted anddipping into the body of fluid reagent, means for operating the. pick-up Wheel forelevatm'g the reagent from thecontainer, said piek-up wheel formed on itsperiphery with aplurality of circumferential channels, a reservoir elevated above the container and provided vvith a reagent inlet,

a valve controlled'continuous'r reagent dis-v chargeof a lesser capacity than the elevating capacity of the pick-uprvvheel, said'reservoir provided with an overflow discharging into the container, a trough coacting at one end `With the periphery'of the pick-up ,Wheel Y toremove the reagent from the surface thereof and convey thesame to the reagent inlet ofthe reservoir, a pivotally mounted conveytrough'movable at one end into the continuous discharge of reagent from the reservoir to receive and direct the samel from its path of gravity lioiv, and means fortilting the l -ixiax Knaur.

pivoted conveyer mea-ns rand including aY cyl- 1 

